¿Cómo usar correctamente en inglés “Around, about»?

Around, about

These two prepositions are usually interchangeable and are used to mean ‘in many places’. However, ‘around’ can also mean ‘in a circular motion or path’. We often use ‘about’ to mean ‘regarding or concerning’.

I have been all around the world. – He viajado por todo el mundo.

What is that book about? – ¿De qué va ese libro?

Why are there no signs around here? – ¿Por qué no hay carteles por aquí?